diff --git a/Tests/UnitTests/Core/Sample/RTTest.cpp b/Tests/UnitTests/Core/Sample/RTTest.cpp
index b9f4ef66bb32503e640a1a04c70d35863214c0a3..858e4e997fe8070b51f68b5380bbe0be0625463f 100644
--- a/Tests/UnitTests/Core/Sample/RTTest.cpp
+++ b/Tests/UnitTests/Core/Sample/RTTest.cpp
@@ -34,7 +34,7 @@ protected:
     {
         std::vector<ScalarRTCoefficients> result;
         for (auto& coeff : inputCoeffs)
-            result.push_back(*dynamic_cast<const ScalarRTCoefficients*>(coeff.release()));
+            result.push_back(*dynamic_cast<const ScalarRTCoefficients*>(coeff.get()));
 
         return result;
     }